IL46706A - Water conducting and emitting device - Google Patents

Abstract

1498544 Hoses G GILEAD 25 Feb 1976 [25 Feb 1975] 07401/76 Addition to 1431118 Heading F2P [Also in Divisions A1, and B2] A drip or trickle irrigation hose comprises two concentric tubes whose confronting surfaces are in contact over part of their area such as to define fluid passages between the parts of their area which are not in contact, said passages being (a) helical of non-uniform cross-section Fig. 1 (not shown), or (b) non- helical, e.g. labyrinthine, Fig. 3, or (c) arranged to follow a common helical path and divided from each other by obturation, Fig. 2. The interior of the hose communicates with the exterior through the passages via slits, Fig. 4 (not shown), provided in the tube walls. The manufacture of the hose when made of plastics material is identical to that described and claimed in Specification No. 1,498,545. [GB1498544A]

Claims (2)

1. WHAT IS CLAIMED IS: 1· A device for use as a supply conduit of irrigation water combined with a trickle or drip emitter, consisting of two continuous hose like elements extending within one another, a conduit for water being formed between the outer wall of the inner and the inner wall of the outer hose like element, openings being provided in the wall of the inner element establishing communication between the interior of the inner hose like element and the said conduit, and further, there being provided apertures in the wall of the outer hose like element leading from said conduit into the open, characterised thereby that the said conduit is constituted by a continuous groove obtained by undulations pressed into the wall of one of the hose like element.

2. The device claimed in Claim 1, characterised thereby that the said groove extends meanderingly along the extension of the device. 3o The device claimed in Claim 2, characterised thereby that the said groove is of a regular pattern. 4. The device claimed in Claim 2, characterised thereby that the said groove exhibits an irregular, haphazard pattern. 5. The device claimed in Claim 1, characterised thereby that the said groove is diviced into portions partitionedfrom one another and being fluid tight in relation to one another. 6. The device claimed in Claim 5, characterised thereby that between given portions of the device a stretch of the outer hose like element is pressed tightly onto the inner hose like element* the said stretch constituting a flow seal between consecutive portions. 7. The device claimed in Claim 1* characterised thereby that the outer hose like element is of slightly larger diameter than the inner one* the outer element being spirally grooved* the inwardly extending spiral ridge of the helix being fused to the inner hose like element. 8· The device claimed in Claims 1 and 7, characterised thereby that both hose like elements are sh llowly grooved and the ridges of the two elements are fused together . 9· The device claimed in Claim 1 or any of the preceding claims* characterised thereby that the apertures leading from the interior of the inner hose like elements into the conduit* are slits cut into the vail of the hose like element* 10* The device claimed in Claim 1 or any one of the preceding claims characterised thereby that the apertures in the vail of the outer hose like element e slits. P.O. BOX 33116, TEIAVIV ATTORNEYS FOR APPLICANT*